260871785 has 4 divisors (see below), whose sum is σ = 313046148. Its totient is φ = 208697424.

The previous prime is 260871781. The next prime is 260871827. The reversal of 260871785 is 587178062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86341264 + 174530521 = 9292^2 + 13211^2 .

It is a cyclic number.

It is not a de Polignac number, because 260871785 - 2² = 260871781 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260871781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26087174 + ... + 26087183.

It is an arithmetic number, because the mean of its divisors is an integer number (78261537).

Almost surely, 2^260871785 is an apocalyptic number.

It is an amenable number.

260871785 is a deficient number, since it is larger than the sum of its proper divisors (52174363).

260871785 is an equidigital number, since it uses as much as digits as its factorization.

260871785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52174362.

The product of its (nonzero) digits is 188160, while the sum is 44.

The square root of 260871785 is about 16151.5257793188. The cubic root of 260871785 is about 638.9629893917.

It can be divided in two parts, 26087 and 1785, that added together give a palindrome (27872).

The spelling of 260871785 in words is "two hundred sixty million, eight hundred seventy-one thousand, seven hundred eighty-five".